Diet Overlap

Bucephala islandica (Barrow's Goldeneye)
Clangula hyemalis (Oldsquaw)

Common Diet

Mytilus edulis (Blue mussel)

Common Habitat

Alaska Maritime National Wildlife Refuge
Alaska-St. Elias Range tundra
Aleutian Islands Biosphere Reserve
Arctic National Wildlife Refuge
Banff National Park
Bighorn Canyon National Recreation Area
Bruce Peninsula National Park
California Coast Ranges Biosphere Reserve
Cape Breton Highlands National Park
Cook Inlet taiga
Copper Plateau taiga
Denali Biosphere Reserve
Eastern Canadian Shield taiga
Elk Island National Park
Elkhorn Slough Preserve
Farallon National Wildlife Refuge
Fathom Five National Marine Park
Forillon National Park
Fundy National Park
Glacier Bay National Park and Preserve
Glen Canyon National Recreation Area
Gros Morne National Park
Gwaii Haanas National Park Reserve
Hortobágy National Park
Iceland boreal birch forests and alpine tundra
Interior Alaska-Yukon lowland taiga
Interior Yukon-Alaska alpine tundra
Jasper National Park
Kluane National Park and Reserve
Kouchibouguac National Park
Lake Mead National Recreation Area
Long Point Biosphere Reserve
Mingan Archipelago National Park Reserve
Mount Arrowsmith
Nahanni National Park Reserve
North America
Northern transitional alpine forests
Olympic Biosphere Reserve
Pacific Coastal Mountain icefields and tundra
Pacific Rim National Park Reserve
Padre Island National Seashore
Pictured Rocks National Lakeshore
Point Reyes National Seashore
Prince Edward Island National Park
Redwood National Park
Rocky Mountain Biosphere Reserve
Rondeau Provincial Park
Saguenay - St. Lawrence Marine Park
Sevilleta LTER Site
Terra Nova National Park
Torngat Mountain tundra
Waterton Biosphere Reserve
Wrangell-St. Elias National Park and Preserve
Yellowstone Biosphere Reserve

Attributes / relations provided by
♦ 1Winter food habits of Barrow's Goldeneyes in southeast Alaska, Philip S. Koehl, Thomas C. Rothe, and Dirk V. Derkson, Canadian Wildlife Service, 1984
♦ 2Winter feeding ecology and trophic relationships of Oldsquaws and White-winged Scoters on Kachemak Bay, Alaska, Gerald A. Sanger and Robert D. Jones, Jr., Canadian Wildlife Service, 1984